Clutch



Aug. 25, 1931.

C. VON RIESEN CLUTCH Fi-1ed May 27, 1929 2 Sheets-Sheet 1 C. V01] Rieseng 1931- c. VON RIESEN 1,820,331

CLUTCH it normelly keeps tl1e pewl in its operetive position which isli1nited by the shouldels 22 end 23.

The pewl 21 is further provided with e pi11 25 which projcts throughtl1e slot 20 0f the intermediete disc 11. The retcl1et dis0 14 isprovided with e s0cket 27 for receiving the lever 28 which is fulcrumed011 the pin 29 pessing through the eperture 30 01 the intermediete disc11, the lever hev ing e hooked portion which is edepted t0 engege tl1epi11 25 01: the pewl 21.

In the operetion 01 tl1e clutch the veri0us 111en1bers ere interlockedes described end only tl1e disc 11 is secured to rotete With the sheft10. When tl1e loed becomes excessive, es f0r exemple when ieedingbundles t0 the threshing mechine, e detent or 0tl1er st0p 31 is providedwhich Will euto-- meticelly drop egeinst tl1e periphery 0f tl1e retchetdisc 14. This errests the motion 01 th0 retchet disc 14 elmostimmedietely but the disc 11 is still cerried f0rwerdly. The lever 28,which is pivoted t0 the disc 11, is thus cerried forwerdly in the socket27 0f the retchet disc 1.4 which is stetionery. As the lever 28 isdepressed in the socket 27, tl1e curved well 0f the socket 27 swings thelever 28 ebout its piv0t 29. The hook portion 015 the lever 28 thenengeges the pin 25 t0 depress tl1e pewl 21 which is thus releesed fr0mengegement witl1 the retchet 19 of the driving disc 18. In the presentinstence the driving disc 18 is sl1own es e belt pulley but it is0bvious thet e11y other f0rm 0f drive mey be epplied. Since tl1e disc 18is loose 011 the sheft 10, it Will rotete idly 011 the sheft efter thepewl 21 hes been disengeged 110111 the retchet 19 end the discs 11 end14 es Well es the sheft 10 Will re1nein stetionery.

When the loed 01 the feeding epperetus bec0mes lighter, the detent 0rstop 31 Will be eutometicelly releesed Tl1e springs 17, wl1ich Werepleced linder tensi0n et the beginning o:f the stopping operetion,willelmost instently restore the discs 11 und 14 t0 their operativereletion. The cevity .0r socket 27 is peer-sheped end the.upper porti011.0f the lever 28 normelly occupies e position in the enlerged portion 0fthe socket 01 cevity. TW0 movements teke plece between the disc 14 endthe lever 28. One of tl1ese is e sliding moven1ent While tl1e 0ther is epivotel movement 0f the lever 28 ebout its pivotel connection 29 withthe dis0 11. 'lhe ection 0f tl1e springs 17 results in e sligl1trelative enguler movement 0f tl1e discs- 11 end 14 end it thus slideblyshifts the lever 28 in the socket 27. The shifting, 01 course, cen tekeplece only ebout the piv0t 29 which forces the upper porti0i1of thelever 28 i11t0 tl1e e11lerged porqion 01? the socket 01' cevity so thetits notched porti0n. is out 01' engegement with direction 011 the bese01' the pewl 21, also tends to force the pewl into operative engegementwith the retchet 19 01 tl1e disc. 18. Either the notch 0f the lever 2801 the spring 24 el0ne would move the pewl towerd the retchet but theydiffer in tl1eir eiiects.

The ection of' the lever 28 011 tl1e pevvl 21 is positive end unyieldingbut the ection stops before full engegement 0f the pewl with theretchet. The spring 24, 011 the other hend, exerts e constent endyielding pressure 011 the pewl until the pevvl is fully seet0d in theretchet end it 111ei11teins tl1e pewl in full engegement e11d prevents2100identel release due to vibretion.

Heving thus described n1y invention in such full, cleer, end exect termsthet its 0011- struction end operetion will be reedily understood by0thers skilled in the ert to which it perteins, whet I cleim es new enddesire t0 secure by Letters Patent 01 the United Stetes is:

l. A clutch including e shei't l1eving thereon e driving disc, enintermediete disc end e clutch releesing disc, seiddiscs beingconsecutively errenged 011 seid sheft, seid intermediete dise beingsecured to seid sheft t0 rotet-e therewith e11d the other tw0 0f seiddiscs being loosely journelled 011 seid sl1eft, an internel retchet 011seid driving disc, e pewl slidebly secured t0 seid intermedietev disc,seid pewl being normelly in engegement witl1 seid retchet, e lever pivotelly secur6dto seid intermediete disc end slidebly held t0 seid clutchreleesing disc, the errengementibeing such thet seid lever Will withdrewseid pewl fr0m seid retchet When the'v movement 011 seid clutchreleesing disc is errested.

2. A clutch including e sheit't, e driving member journelled coexiellyonseid sheit end heving e plurelity of retchet teeth er" rengedconcentric-elly ebout seid sheft e disc secured to rotete With seidsheft, e pewl slideble 011 seid disc int0 the peth 01' tl1e retchetteeth 0f seid driving member, meens 101' normelly meinteining seid pevvlin engegement with the teeth of seid driving member, e stop memberjournelled coexielly on seid sheft, end e lever pivotelly secured t0seid disc end slidebly held t0 seid stop member, seidlever beingpivotelly moveble egeinst seid pewl to releese seid pewl f10111engegement with the retchet teeth of seid driving member end beingslidebly moveble 011 seid st0p member to rock seid lever Whe11 therotetion of seid stop member is errested.

with the ratchetkteeth 0f said drivi ng me1n- 3. A clfitch including a.shft having thereon a driving member, anintermediate member and achfl:ch rele asing member, said members being conseout ively arranged011 said shaf't and co2iXialihe'rwith, said intermediatememberbeingfsecre'd to said shaft (o rotaiie therewith and the other two10f said membe rs being loosely journalled 0n said shaf, a pawlslidz'mbly s'ecured to said intermecliate member, said driving memberbeing provided with ratchet teeth in the path.of said Slidabl6 pawl,meanS for 110rmally maintaining' said pa.Wl in engaggmnt ber, a le verpivotally secured to*said intermediate member and m'ovable into Positionto release said pawl from engagement with the 'mtc'het teth 0f Saiddrivii1g m'ember v ssaid lever bei1ig8lidable 011 Said clutch'releasihgmemberto move said lever 011 its pivot when the rot ation of saidc1i1tch re1easing member is 'ar rested.

' v 4. A clutch including a shnft having her'eon a c'lri'vingmember,*anintermediate meinber and a clutch releas1ng member, sa1dperiphery 0:E s2tid disc, a drivirig me'mber menabers being arrangfedconsecutively 0n sa1d shaft and coaxml therewh, smd 1ntermechate memberbe1ng secured to sind shaft to rotate therewith und the othef two ofsaid members being loosely journalled on said shaft, said intermediatememberu'1d said clutch -releasin g member being- (auch prgvided with asocket eccentrically positioned thereiri=a paWl slidably secured in thesocket 0f said intermediate member, said driving n1ember being providedwithratchet t'eeth in the path of said .pawl, and a lever pivota1lysecured to said'intermediate memb'er and movable against sai d Pawltoreleas'said pawl from engagement with the ratchet teeth of saiddrivingmember said lever be-' ing slidably c-onfined in thess0cket ofsaid clutch releasing member to mov6said levef 011 its pivot When;fh@rotatio'n 0 f said clut-ch releasing member is arfested.

y 5; A clutch includ1ng a shafb havifigzt disc s ecured thereto torotate therewith, a

pavvl slidabl(a t'owarcl and away fi0m the coaxial with said shaft sindhavi-nga plurality 0f ratche-t teeth arranged concntripal- 1y with saidshaft and in the path'of said pawl, a stop member rotatablj m0u11ted onsaid shaft und coaxi'al therewi-th, and a lever pivotally securedtolsaid disc and slidably I bald bysaid stop member', Said lever beingslidably shifted when the r'otation 0f Said. stop member is arrested and being movable to depress said pawl to disengage said pawl bar.

eure. T CQRNELIUS VON RIESEN.

from the ratchet teth of s a iddriving mem- 1 In'testimohy whereofIaffix mysigria-

